Thanks Edward, Yes, it is too difficult for me about IP law, I need to consult a lawyer. :) I will update the progress, when the product is once released, I will inform all of you. Zhao Liang <div class="gmail_quote"> 2009/3/13 Edward Hervey <<a href="mailto:bilboed@gmail.com">bilboed@gmail.com</a>> <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> <div class="im">On Fri, 2009-03-13 at 10:27 +0800, Liang Zhao wrote: > Hi all, > > I plan to port mpegaudioparse and asfdemux in plugin-ugly into my > product for resale, is it reasonable? </div> If you mean whether you have the right... it's LGPL, so yes :) <div class="im"> > no any license/patent issues? </div> Two different things: * The software license (LGPL) : If you make any modifications, try to push them upstream, since anybody buying your 'product' will have the right to demand the exact source code use to build those plugins. * Patents. This is for container formats... and it's, to be honest, a very tricky situation. There are some saying you need to pay royalties (to whom?) and some not (because container formats are trivial). But something tells me that if there was any patents involved ... you would already be covered considering that you must have decoders (asf without wm* decoders is useless, and mpegaudioparse without mp3 decoder also) for which you acquired (or are acquiring, or got the usage rights with the hardware decoders) a usage license. Consult a lawyer. <div class="im"> > if have, after I pay the royalty, is it ok? </div> The two items above are the only major items to be aware of. But as I said, if you're making a product, you might want to consult a lawyer specialized in that field. Keep us informed of your progress and show us what product it is once it's released :) Edward > > -- > BRs. > Zhao Liang </blockquote></div>